Dark energy and decompactification in string gas cosmology

Details Dark energy and decompactification in string gas cosmology Dark energy and decompactification in string gas cosmology

2005-09-29

arxiv.org/abs/hep-th/0509225v2

JHEP 0602 (2006) 016

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, 6 figures. Published version. Added references

Scientific paper

10.1088/1126-6708/2006/02/016

We study the stability of extra dimensions in string gas cosmology at late times. Vacuum energy and, interestingly, baryons lead to decompactification after they become dynamically important. The string gas can stabilise the effect of baryons, but not that of vacuum energy. However, we find that the interplay of baryons and strings can lead to acceleration in the visible dimensions, without the need for vacuum energy.

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